[PATCH 21/52] finish_automount(): simplify the ELOOP check

[Al Viro <viro@xxxxxxxxxxxxxxxxxx>]

It's enough to check that dentries match; if path->dentry is equal to
m->mnt_root, superblocks will match as well.

Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
---
 fs/namespace.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/namespace.c b/fs/namespace.c
index 9e04133d81dd..5c4b4f25b5f8 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -3803,8 +3803,7 @@ int finish_automount(struct vfsmount *m, const struct path *path)
 
 	mnt = real_mount(m);
 
-	if (m->mnt_sb == path->mnt->mnt_sb &&
-	    m->mnt_root == dentry) {
+	if (m->mnt_root == path->dentry) {
 		err = -ELOOP;
 		goto discard;
 	}
-- 
2.47.2